/usr/share/doc/libclippoly-dev/changelog.Debian.gz is in libclippoly-dev 0.11-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libclippoly-dev/../libclippoly0/changelog.Debian.gz
/usr/share/doc/libclippoly-dev/../libclippoly0/changelog.Debian.gz